Please use this identifier to cite or link to this item:
http://hdl.handle.net/1942/35895
Title: | Dielectric Barrier Discharge (DBD) Plasma Coating of Sulfur for Mitigation of Capacity Fade in Lithium-Sulfur Batteries | Authors: | SHAFIQUE, Ahmed Rangasamy, VS Vanhulsel, A SAFARI, Momo Gross, S ADRIAENSENS, Peter VAN BAEL, Marlies HARDY, An Sallard, S |
Issue Date: | 2021 | Publisher: | AMER CHEMICAL SOC | Source: | ACS Applied Materials & Interfaces, 13 (24) , p. 28072 -28089 | Abstract: | Sulfur particles with a conductive polymer coating of poly(3,4-ethylene dioxythiophene) "PEDOT" were prepared by dielectric barrier discharge (DBD) plasma technology under atmospheric conditions (low temperature, ambient pressure). We report a solvent-free, low-cost, low-energy-consumption, safe, and low-risk process to make the material development and production compatible for sustainable technologies. Different coating protocols were developed to produce PEDOT-coated sulfur powders with electrical conductivity in the range of 10(-8)-10(-)(5) S/cm. The raw sulfur powder (used as the reference) and (low-, optimum-, high-) PEDOT-coated sulfur powders were used to assemble lithium-sulfur (Li-S) cells with a high sulfur loading of similar to 4.5 mg/cm(2). Long-term galvanostatic cycling at C/10 for 100 cycles showed that the capacity fade was mitigated by similar to 30% for the cells containing the optimum-PEDOT-coated sulfur in comparison to the reference Li-S cells with raw sulfur. Rate capability, cyclic voltammetry, and electrochemical impedance analyzes confirmed the improved behavior of the PEDOT-coated sulfur as an active material for lithium-sulfur batteries. The Li-S cells containing optimum-PEDOT-coated sulfur showed the highest reproducibility of their electrochemical properties. A wide variety of bulk and surface characterization methods including conductivity analysis, X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and NMR spectroscopy were used to explain the chemical features and the superior behavior of Li-S cells using the optimum-PEDOT-coated sulfur material. Moreover, postmortem [SEM and Brunauer-Emmett-Teller (BET)] analyzes of uncoated and coated samples allowed us to exclude any significant effect at the electrode scale even after 70 cycles. | Keywords: | lithium-sulfur;battery;surface coating;plasma;dielectric barrier discharge;aging | Document URI: | http://hdl.handle.net/1942/35895 | ISSN: | 1944-8244 | e-ISSN: | 1944-8252 | DOI: | 10.1021/acsami.1c04069 | ISI #: | 000667982100032 | Rights: | 2021 American Chemical Society | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2022 |
Appears in Collections: | Research publications |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Dielectric Barrier Discharge (DBD) Plasma Coating of Sulfur for Mitigation of Capacity Fade in Lithium–Sulfur Batteries.pdf Restricted Access | Published version | 11 MB | Adobe PDF | View/Open Request a copy |
Template for Electronic Submission to ACS Journals.pdf | Peer-reviewed author version | 1.82 MB | Adobe PDF | View/Open |
WEB OF SCIENCETM
Citations
13
checked on Oct 12, 2024
Page view(s)
44
checked on Sep 7, 2022
Download(s)
24
checked on Sep 7, 2022
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.